Leythem is a European and UK patent attorney and litigator specialising in the chemical, consumer products, energy, material, mechanical, medical and pharmaceutical sectors. Prior to founding Oxon IP, he was a Partner in major European and US Intellectual Property law firms, and before then in-house patent counsel for some of the world’s largest US and European multinationals.
He regularly represents clients in Opposition and Appeal proceedings before the European Patent Office (EPO) as lead counsel in a wide variety of technical areas. He has won numerous defensive and offensive oppositions, including multi-party proceedings, and successful coordination with disputes in multiple jurisdictions such as UK, Germany, US, China, Japan, Korea, and India.
Leythem is a member of the CIPA Litigation and International Liaison Committees, the IPO European Practice Committee, the EQE Committee (Opposition Paper C), and is Immediate Past President of the European Patent Litigators Association (EPLIT).
He holds a Masters degree in Chemistry from Oxford University, a Postgraduate Certificate in Intellectual Property Law from Queen Mary University of London, the Postgraduate Certificate in IP Litigation and Advocacy from Nottingham Law School, and the Diploma in Patent Litigation in Europe from CEIPI, University of Strasbourg.
A frequent author and lecturer on patent law, Leythem has had numerous articles published in legal journals and spoken at international programs and conferences in Europe, USA and Asia, as well as before Fortune 500 companies.
Education/Alumni: Oxford University
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